Tessera
LayoffWARN notice filed with the Washington State Employment Security Department
View all filings for this employer →Official Notice Document
Direct document links are not republished because ESD's live download URLs can change after review. Filing facts shown here come from ESD's public WARN record. Search ESD's public WARN database.
Affected Positions
Tessera Therapeutics is laying off 90 employees company-wide from its Somerville, Massachusetts headquarters starting March 8, 2026; one affected employee resides in Washington.
The notice does not list specific positions.
Positions extracted from the official notice document using AI; verify with the official ESD source record by employer and filing date.
More Notices from Tessera
Full company history →Swipe horizontally to see all columns.
| Filed | County | Workers | Type |
|---|---|---|---|
| October 31, 2025 | Not reported | 85 | Layoff |
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About WARN Notices
Washington law generally requires covered employers to provide 60 days' written notice for qualifying closures, mass layoffs, and certain reductions in hours. Thresholds and exceptions apply. Data on this page comes from Washington ESD's public WARN records. Search ESD's public WARN database.